package com.mrd.base.utils;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;

import com.mrd.modules.system.entity.SysUserEntity;

/**
 * Shiro工具类
 * 
 * @author han
 */
public class ShiroUtils {

  public static Session getSession() {
    return SecurityUtils.getSubject().getSession();
  }

  public static Subject getSubject() {
    return SecurityUtils.getSubject();
  }

  public static SysUserEntity getUserEntity() {
    Object obj = SecurityUtils.getSubject().getPrincipal();
    byte[] objByte = SerializeUtils.serialize(obj);
    SysUserEntity userEntity = (SysUserEntity) SerializeUtils.deserialize(objByte);
    return userEntity;
  }

  public static Integer getUserId() {
    return getUserEntity().getId();
  }

  public static void setSessionAttribute(Object key, Object value) {
    getSession().setAttribute(key, value);
  }

  public static Object getSessionAttribute(Object key) {
    return getSession().getAttribute(key);
  }

  public static boolean isLogin() {
    return SecurityUtils.getSubject().getPrincipal() != null;
  }

  public static void logout() {
    SecurityUtils.getSubject().logout();
  }

  public static String getKaptcha(String key) {
    Object kaptcha = getSessionAttribute(key);
    if (kaptcha == null) {
      throw new RRException("验证码已失效");
    }
    getSession().removeAttribute(key);
    return kaptcha.toString();
  }

}
